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Terms for subject Automobiles containing 气坑 | all forms
ChineseEnglish
工作面凹坑不对称以挤压充气的转子beetle rotor
活塞顶上气门凹坑valve relief (piston relief)
活塞顶上气门凹坑为防止活塞到达上止点时与气门干涉而设置valve recess